Process for the protection and authentification of articles



Patented Feb. 28, 11933,

UNITED STATES PATIENT] OFFICE nmronn BAYLE, Emmi GEORGE 4m) nuc'os'rm MAGHE, or rams, amen rnocnss FOR riixrnornc'rxon AND nu'rrrnn'rrrron'rion or narrows No Drawing. Application filed January 24, 1929, Serial No. 334,849, and in France Ianuary QB, 19888 .v

The present invention has for its object a process for the protection and authentification of deeds, cheques, receipts, contracts, coupons, tickets, trade marks, guarantee stamps and in a general manner of all documents, printed or manuscript, or even objects.

This process consists in the systematic use, for the printings or inscriptions, of an ink, varnish or coating, containing a coloured indicator, that is, a body of which the colour is a function of its ionic state, so that, by varying this ionic state b suitable reagents, there are obtained pre etermined colorations, a buffer mixture being added to the ink, varnish or coating in order to render the coloured indicator immune against the efi'ect of atmospheric agents, so that this ink, varnish or coating will have a stable ionic state and therefore a well-defined colour, .not varying under the action of slight accidental variations of acidity'or alkalinity of the atmosphere. When the nature of the object does not allow any printing on its surface,

for example in the case of pastes, plastic materials or like products, the present process remains applicable by the incorporation, in

the mass of the said objects, of the active ionized and coloured material.

The authentification consists in developing upon the surface of the object, by means of one or more suitable reagents, one or more determined ionic states, corresponding to one or more characteristic colorations.

The number of the ionic states, and consecoloration is comprised between two limits.

as close as may be desired and of which the Sodium salt of o-toluidine-diazobi-1-naphthylaminei-sulphonic acid 2 to 4 gr.

some v om.

' E1oH N=N cHa HroHaCH|N=N 1o 5 NH NH: Bi-phosphate of soda 10' to 15 gr.

0N. =r-on oH Soda -Q. 1.5 gr.

e-oa' Glycerine 5 to 10'gr.:

100 to 500 gr.

Hydrochloric acid changes the colour to A mixture of glycocol, chloride of sodium and hydrochloric acid changes the colour, to blue-green.

A mixture of hydrochloric acid and bi- 'phthalate of potash changes the colour to blue-grey. v

A mixture of citrate of soda and hydrochloric acid changes the colour to indigo.

A mixture of boric acid and borax changes the colour to violet.

The authentification reagents might likewise contain one or more of the coloured indicators or bodies having a Tcharacteristic coloration dependent on their Ionic state; thus in the example given above, these reagents might contain the chlorozincic deriv- 'ative of the bromethylate mentioned or the sodium salt of o-toluidi-ne-diazo-bi-l-naphthylamine-t-sulphonic acid, and a mixture of a weak acid and a strong base, said product being adapted to give predetermined colorations with suitable reagents.

'2..A process for the authentification .of articles, consisting in incorporating to said articles a product comprising a chloro-zincic derivative of the bromethylate of hexamethyl and penta-methylmonethyl-p-rosaniline, a sodium salt of o-toluidine-diazo-bi-lnaphthylamine--sulphonic acid, and a mixture of biphosphate of soda and of soda, said product being adapted to give predetermined coloration with suitable reagents.

3. As a new article of manufacture for the authentification of articles, a product comprising a chloro-zincic derivative of bromethylate of hexamethyL and penta-methylmonoethyl-p-rosaniline, a sodium salt of o toluidinediazo-bi-1-naphthylamine-4-sulphonic acid, and a mixture of a weak acid and.

a strong base.

4. As a new article of manufacture for the authentification of articles, a product comprising a chloro-zincic derivative of the bromethylate of hexamethyland pentamethylmonoethyl-p-rosaniline, a sodium salt of otoluidinediazo-bi-l-naphthylamine 4 sulphonic acid, and a mixture of biphosphate of soda and of soda.

5. A process for the authentification of articles, consisting in incorporating to said articles a product comprising a chloro-zincic derivative of bromethylate of nexamethyland penta-methylmonoethyl- -rosanilin'e, and a mixture of a weak acid and a strong base, said product being adapted to give predetermined colorations with sultable reagents.

6. A process for the authentlfication of articles, consisting in incorporating to sand articles a product comprising a chloro-zlncic derivative of the bromethylate of hexamethyland penta-methylmonoethyl-p-rosaniline, and a mixture of biphosphate of soda and of soda, said product being adapted to give predetermined colorations with sultable reagents 7. As a new article of manufacture for the authentification of articles, a product comprising a chloro-zincic derivative of hexamethyland penta-methylmonoethyl-prosaniline, and a mixture of a weak acid and a strong base.

8. As a new article of manufacture for the authentification of articles, a product comprising a chloro-zincic derivative of the bromethylate of hexamethyland pentainethylmonoethyl-p-rosaniline, and a mixture of biphosphate of soda and of soda.

9. A process for the authentificatlon of articles, consisting in incorporating to said articles a product comprising a sodium salt of o toluidine diazo-bi-l-naphthylamine-4-sulphonic acid, and a mixture of a weak ac1d and a strong base, said product bemg adapted to give predetermined colorations with su1t able reagents.

10. A process for the authentification of articles consisting in incorporating to said articles a product comprising a sodium salt of o-toluidine-diazo-bi-1-naphthylam1ne-4- sulphonic acid, and a mixture of biphosphate of soda and of soda, said product being adapted to give predetermined colorations with suitable reagents.

11. As a new article of manufacture for the authentification of articles, a product comprising a sodium salt of o-toluidinediazo-bi-l-naphthylamine-4-sulphonic acid, and a mixture of a weak acid and a strong base.

12. As a new article of manufacture for the authentification of articles, a product comprising a sodium salt of o-toluidinediazo-bi-l-naphthylamine 4-sulphonic acld, andd a mixture-of biphosphate of soda and of so a.

In testimony whereof we have signed our names to this specification.

EDMOND BAYLE. HENRI GEORGE.

AUGUSTIN MACHE. 

